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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /drivers/bluetooth/btbcm.c | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | drivers/bluetooth/btbcm.c | 662 |
1 files changed, 662 insertions, 0 deletions
diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c new file mode 100644 index 000000000..636db3b7e --- /dev/null +++ b/drivers/bluetooth/btbcm.c @@ -0,0 +1,662 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * + * Bluetooth support for Broadcom devices + * + * Copyright (C) 2015 Intel Corporation + */ + +#include <linux/efi.h> +#include <linux/module.h> +#include <linux/firmware.h> +#include <asm/unaligned.h> + +#include <net/bluetooth/bluetooth.h> +#include <net/bluetooth/hci_core.h> + +#include "btbcm.h" + +#define VERSION "0.1" + +#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}}) +#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}}) +#define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}}) +#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}}) +#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}}) +#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}}) +#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}}) +#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}}) +#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}}) + +#define BCM_FW_NAME_LEN 64 +#define BCM_FW_NAME_COUNT_MAX 2 +/* For kmalloc-ing the fw-name array instead of putting it on the stack */ +typedef char bcm_fw_name[BCM_FW_NAME_LEN]; + +#ifdef CONFIG_EFI +static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev) +{ + efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f, + 0x43, 0x26, 0x81, 0x23, 0xd1, 0x13); + bdaddr_t efi_bdaddr, bdaddr; + efi_status_t status; + unsigned long len; + int ret; + + if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) + return -EOPNOTSUPP; + + len = sizeof(efi_bdaddr); + status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr); + if (status != EFI_SUCCESS) + return -ENXIO; + + if (len != sizeof(efi_bdaddr)) + return -EIO; + + baswap(&bdaddr, &efi_bdaddr); + + ret = btbcm_set_bdaddr(hdev, &bdaddr); + if (ret) + return ret; + + bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr); + return 0; +} +#else +static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev) +{ + return -EOPNOTSUPP; +} +#endif + +int btbcm_check_bdaddr(struct hci_dev *hdev) +{ + struct hci_rp_read_bd_addr *bda; + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + int err = PTR_ERR(skb); + + bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err); + return err; + } + + if (skb->len != sizeof(*bda)) { + bt_dev_err(hdev, "BCM: Device address length mismatch"); + kfree_skb(skb); + return -EIO; + } + + bda = (struct hci_rp_read_bd_addr *)skb->data; + + /* Check if the address indicates a controller with either an + * invalid or default address. In both cases the device needs + * to be marked as not having a valid address. + * + * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller + * with no configured address. + * + * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller + * with no configured address. + * + * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller + * with no configured address. + * + * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller + * with waiting for configuration state. + * + * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller + * with waiting for configuration state. + * + * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller + * with no configured address. + */ + if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) || + !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) || + !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) || + !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) || + !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) || + !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) || + !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) || + !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) || + !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) { + /* Try falling back to BDADDR EFI variable */ + if (btbcm_set_bdaddr_from_efi(hdev) != 0) { + bt_dev_info(hdev, "BCM: Using default device address (%pMR)", + &bda->bdaddr); + set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); + } + } + + kfree_skb(skb); + + return 0; +} +EXPORT_SYMBOL_GPL(btbcm_check_bdaddr); + +int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) +{ + struct sk_buff *skb; + int err; + + skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + err = PTR_ERR(skb); + bt_dev_err(hdev, "BCM: Change address command failed (%d)", err); + return err; + } + kfree_skb(skb); + + return 0; +} +EXPORT_SYMBOL_GPL(btbcm_set_bdaddr); + +int btbcm_read_pcm_int_params(struct hci_dev *hdev, + struct bcm_set_pcm_int_params *params) +{ + struct sk_buff *skb; + int err = 0; + + skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + err = PTR_ERR(skb); + bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err); + return err; + } + + if (skb->len != 6 || skb->data[0]) { + bt_dev_err(hdev, "BCM: Read PCM int params length mismatch"); + kfree_skb(skb); + return -EIO; + } + + if (params) + memcpy(params, skb->data + 1, 5); + + kfree_skb(skb); + + return 0; +} +EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params); + +int btbcm_write_pcm_int_params(struct hci_dev *hdev, + const struct bcm_set_pcm_int_params *params) +{ + struct sk_buff *skb; + int err; + + skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + err = PTR_ERR(skb); + bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err); + return err; + } + kfree_skb(skb); + + return 0; +} +EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params); + +int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw) +{ + const struct hci_command_hdr *cmd; + const u8 *fw_ptr; + size_t fw_size; + struct sk_buff *skb; + u16 opcode; + int err = 0; + + /* Start Download */ + skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + err = PTR_ERR(skb); + bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)", + err); + goto done; + } + kfree_skb(skb); + + /* 50 msec delay after Download Minidrv completes */ + msleep(50); + + fw_ptr = fw->data; + fw_size = fw->size; + + while (fw_size >= sizeof(*cmd)) { + const u8 *cmd_param; + + cmd = (struct hci_command_hdr *)fw_ptr; + fw_ptr += sizeof(*cmd); + fw_size -= sizeof(*cmd); + + if (fw_size < cmd->plen) { + bt_dev_err(hdev, "BCM: Patch is corrupted"); + err = -EINVAL; + goto done; + } + + cmd_param = fw_ptr; + fw_ptr += cmd->plen; + fw_size -= cmd->plen; + + opcode = le16_to_cpu(cmd->opcode); + + skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + err = PTR_ERR(skb); + bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)", + opcode, err); + goto done; + } + kfree_skb(skb); + } + + /* 250 msec delay after Launch Ram completes */ + msleep(250); + +done: + return err; +} +EXPORT_SYMBOL(btbcm_patchram); + +static int btbcm_reset(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + int err = PTR_ERR(skb); + + bt_dev_err(hdev, "BCM: Reset failed (%d)", err); + return err; + } + kfree_skb(skb); + + /* 100 msec delay for module to complete reset process */ + msleep(100); + + return 0; +} + +static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, "BCM: Reading local name failed (%ld)", + PTR_ERR(skb)); + return skb; + } + + if (skb->len != sizeof(struct hci_rp_read_local_name)) { + bt_dev_err(hdev, "BCM: Local name length mismatch"); + kfree_skb(skb); + return ERR_PTR(-EIO); + } + + return skb; +} + +static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)", + PTR_ERR(skb)); + return skb; + } + + if (skb->len != sizeof(struct hci_rp_read_local_version)) { + bt_dev_err(hdev, "BCM: Local version length mismatch"); + kfree_skb(skb); + return ERR_PTR(-EIO); + } + + return skb; +} + +static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)", + PTR_ERR(skb)); + return skb; + } + + if (skb->len != 7) { + bt_dev_err(hdev, "BCM: Verbose config length mismatch"); + kfree_skb(skb); + return ERR_PTR(-EIO); + } + + return skb; +} + +static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, "BCM: Read controller features failed (%ld)", + PTR_ERR(skb)); + return skb; + } + + if (skb->len != 9) { + bt_dev_err(hdev, "BCM: Controller features length mismatch"); + kfree_skb(skb); + return ERR_PTR(-EIO); + } + + return skb; +} + +static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)", + PTR_ERR(skb)); + return skb; + } + + if (skb->len != 5) { + bt_dev_err(hdev, "BCM: USB product length mismatch"); + kfree_skb(skb); + return ERR_PTR(-EIO); + } + + return skb; +} + +static int btbcm_read_info(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Read Verbose Config Version Info */ + skb = btbcm_read_verbose_config(hdev); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]); + kfree_skb(skb); + + /* Read Controller Features */ + skb = btbcm_read_controller_features(hdev); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); + kfree_skb(skb); + + return 0; +} + +static int btbcm_print_local_name(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Read Local Name */ + skb = btbcm_read_local_name(hdev); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); + kfree_skb(skb); + + return 0; +} + +struct bcm_subver_table { + u16 subver; + const char *name; +}; + +static const struct bcm_subver_table bcm_uart_subver_table[] = { + { 0x4103, "BCM4330B1" }, /* 002.001.003 */ + { 0x410d, "BCM4334B0" }, /* 002.001.013 */ + { 0x410e, "BCM43341B0" }, /* 002.001.014 */ + { 0x4204, "BCM2076B1" }, /* 002.002.004 */ + { 0x4406, "BCM4324B3" }, /* 002.004.006 */ + { 0x4606, "BCM4324B5" }, /* 002.006.006 */ + { 0x6109, "BCM4335C0" }, /* 003.001.009 */ + { 0x610c, "BCM4354" }, /* 003.001.012 */ + { 0x2122, "BCM4343A0" }, /* 001.001.034 */ + { 0x2209, "BCM43430A1" }, /* 001.002.009 */ + { 0x6119, "BCM4345C0" }, /* 003.001.025 */ + { 0x6606, "BCM4345C5" }, /* 003.006.006 */ + { 0x230f, "BCM4356A2" }, /* 001.003.015 */ + { 0x220e, "BCM20702A1" }, /* 001.002.014 */ + { 0x420d, "BCM4349B1" }, /* 002.002.013 */ + { 0x420e, "BCM4349B1" }, /* 002.002.014 */ + { 0x4217, "BCM4329B1" }, /* 002.002.023 */ + { 0x6106, "BCM4359C0" }, /* 003.001.006 */ + { 0x4106, "BCM4335A0" }, /* 002.001.006 */ + { } +}; + +static const struct bcm_subver_table bcm_usb_subver_table[] = { + { 0x2105, "BCM20703A1" }, /* 001.001.005 */ + { 0x210b, "BCM43142A0" }, /* 001.001.011 */ + { 0x2112, "BCM4314A0" }, /* 001.001.018 */ + { 0x2118, "BCM20702A0" }, /* 001.001.024 */ + { 0x2126, "BCM4335A0" }, /* 001.001.038 */ + { 0x220e, "BCM20702A1" }, /* 001.002.014 */ + { 0x230f, "BCM4356A2" }, /* 001.003.015 */ + { 0x4106, "BCM4335B0" }, /* 002.001.006 */ + { 0x410e, "BCM20702B0" }, /* 002.001.014 */ + { 0x6109, "BCM4335C0" }, /* 003.001.009 */ + { 0x610c, "BCM4354" }, /* 003.001.012 */ + { 0x6607, "BCM4350C5" }, /* 003.006.007 */ + { } +}; + +int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done) +{ + u16 subver, rev, pid, vid; + struct sk_buff *skb; + struct hci_rp_read_local_version *ver; + const struct bcm_subver_table *bcm_subver_table; + const char *hw_name = NULL; + char postfix[16] = ""; + int fw_name_count = 0; + bcm_fw_name *fw_name; + const struct firmware *fw; + int i, err; + + /* Reset */ + err = btbcm_reset(hdev); + if (err) + return err; + + /* Read Local Version Info */ + skb = btbcm_read_local_version(hdev); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + ver = (struct hci_rp_read_local_version *)skb->data; + rev = le16_to_cpu(ver->hci_rev); + subver = le16_to_cpu(ver->lmp_subver); + kfree_skb(skb); + + /* Read controller information */ + if (!(*fw_load_done)) { + err = btbcm_read_info(hdev); + if (err) + return err; + } + err = btbcm_print_local_name(hdev); + if (err) + return err; + + bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table : + bcm_uart_subver_table; + + for (i = 0; bcm_subver_table[i].name; i++) { + if (subver == bcm_subver_table[i].subver) { + hw_name = bcm_subver_table[i].name; + break; + } + } + + bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u", + hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13, + (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff); + + if (*fw_load_done) + return 0; + + if (hdev->bus == HCI_USB) { + /* Read USB Product Info */ + skb = btbcm_read_usb_product(hdev); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + vid = get_unaligned_le16(skb->data + 1); + pid = get_unaligned_le16(skb->data + 3); + kfree_skb(skb); + + snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid); + } + + fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL); + if (!fw_name) + return -ENOMEM; + + if (hw_name) { + snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, + "brcm/%s%s.hcd", hw_name, postfix); + fw_name_count++; + } + + snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, + "brcm/BCM%s.hcd", postfix); + fw_name_count++; + + for (i = 0; i < fw_name_count; i++) { + err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev); + if (err == 0) { + bt_dev_info(hdev, "%s '%s' Patch", + hw_name ? hw_name : "BCM", fw_name[i]); + *fw_load_done = true; + break; + } + } + + if (*fw_load_done) { + err = btbcm_patchram(hdev, fw); + if (err) + bt_dev_info(hdev, "BCM: Patch failed (%d)", err); + + release_firmware(fw); + } else { + bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:"); + for (i = 0; i < fw_name_count; i++) + bt_dev_err(hdev, "BCM: '%s'", fw_name[i]); + } + + kfree(fw_name); + return 0; +} +EXPORT_SYMBOL_GPL(btbcm_initialize); + +int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done) +{ + int err; + + /* Re-initialize if necessary */ + if (*fw_load_done) { + err = btbcm_initialize(hdev, fw_load_done); + if (err) + return err; + } + + btbcm_check_bdaddr(hdev); + + set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); + + return 0; +} +EXPORT_SYMBOL_GPL(btbcm_finalize); + +int btbcm_setup_patchram(struct hci_dev *hdev) +{ + bool fw_load_done = false; + int err; + + /* Initialize */ + err = btbcm_initialize(hdev, &fw_load_done); + if (err) + return err; + + /* Re-initialize after loading Patch */ + return btbcm_finalize(hdev, &fw_load_done); +} +EXPORT_SYMBOL_GPL(btbcm_setup_patchram); + +int btbcm_setup_apple(struct hci_dev *hdev) +{ + struct sk_buff *skb; + int err; + + /* Reset */ + err = btbcm_reset(hdev); + if (err) + return err; + + /* Read Verbose Config Version Info */ + skb = btbcm_read_verbose_config(hdev); + if (!IS_ERR(skb)) { + bt_dev_info(hdev, "BCM: chip id %u build %4.4u", + skb->data[1], get_unaligned_le16(skb->data + 5)); + kfree_skb(skb); + } + + /* Read USB Product Info */ + skb = btbcm_read_usb_product(hdev); + if (!IS_ERR(skb)) { + bt_dev_info(hdev, "BCM: product %4.4x:%4.4x", + get_unaligned_le16(skb->data + 1), + get_unaligned_le16(skb->data + 3)); + kfree_skb(skb); + } + + /* Read Controller Features */ + skb = btbcm_read_controller_features(hdev); + if (!IS_ERR(skb)) { + bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); + kfree_skb(skb); + } + + /* Read Local Name */ + skb = btbcm_read_local_name(hdev); + if (!IS_ERR(skb)) { + bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); + kfree_skb(skb); + } + + set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); + + return 0; +} +EXPORT_SYMBOL_GPL(btbcm_setup_apple); + +MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); +MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION); +MODULE_VERSION(VERSION); +MODULE_LICENSE("GPL"); |